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80217 = 332971
BaseRepresentation
bin10011100101011001
311002001000
4103211121
510031332
61415213
7452604
oct234531
9132030
1080217
11552a5
123a509
132a687
142133b
1518b7c
hex13959

80217 has 8 divisors (see below), whose sum is σ = 118880. Its totient is φ = 53460.

The previous prime is 80209. The next prime is 80221. The reversal of 80217 is 71208.

It is not a de Polignac number, because 80217 - 23 = 80209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80217.

It is not an unprimeable number, because it can be changed into a prime (80207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459 + ... + 1512.

It is an arithmetic number, because the mean of its divisors is an integer number (14860).

280217 is an apocalyptic number.

It is an amenable number.

80217 is a deficient number, since it is larger than the sum of its proper divisors (38663).

80217 is a wasteful number, since it uses less digits than its factorization.

80217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 80217 is about 283.2260581232. The cubic root of 80217 is about 43.1276179885.

Subtracting from 80217 its reverse (71208), we obtain a palindrome (9009).

The spelling of 80217 in words is "eighty thousand, two hundred seventeen".

Divisors: 1 3 9 27 2971 8913 26739 80217